One handred moles of a monatomic gas is com-pressed as shown on the p–V diagram in Fig. 12.23.

(a) Is the work done by the gas (1) positive, (2) zero, or (3) negative? Why?
(b) What is the work done by the gas?
(c) What is the change in temperature of the gas?
(d) What is the change in internal energy of the gas?
(e) How much heat is involved in the process?